It's not just us geeks. My wife and kids (at least, the daughters who are full-time snapchat users) would definitely select the larger phone with bigger battery

It's not just us geeks. My wife and kids (at least, the daughters who are full-time snapchat users) would definitely select the larger phone with bigger battery. If you had both choices before you in the store, who wouldn't start to wonder if they'd regret the thinner/lower capacity choice?